China's top 10 domestic events of 2013

-- China establishes air defense identification zone

China announced an East China Sea Air Defense Identification Zone on November 23, requiring all aircraft to report their flight plans and establish identification communications when passing through the area.

The zone includes airspace within the area enclosed the outer limit of China's territorial waters and six other points.

The zone does not target any specific country and has not affected flight plans of any other countries' aircraft.